響應是json格式數據，而瀏覽器接受的是text/html;charset=UTF-8文本類型的問題解決

問題描述：The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers

原因： @ResponseBody返回json格式的數據，而瀏覽器接受的是text/html;charset=UTF-8文本類型

一、導入json所需的依賴

 <!--json所需要的依賴-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.7.3</version>
    </dependency>
 
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.7.3</version>
    </dependency>
 
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.7.3</version>
    </dependency>

二、在springmvc配置文件中，配置json轉換器（方式一）

<!--轉化json-->
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <!--json視圖攔截器，讀取到@ResponseBody的時候去配置它-->
                <ref bean="mappingJacksonHttpMessageConverter"/>
            </list>
        </property>
    </bean>
    <!--json轉化器，它可以將結果轉化-->
    <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>application/json;charset=UTF-8</value>
            </list>
        </property>
    </bean>

（方式二）

 <!-- 1.開啟SpringMVC注解驅動 -->
    <mvc:annotation-driven>
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
        </mvc:message-converters>
    </mvc:annotation-driven>